Vector Navtex SystemVR1500TT and VR3000-TT - 1.5 kW and 3 kW Navtex / MF Telegraph Transmitters The Nautel Vector Navtex System offers a unique, patented solution to maintain system coverage regardless of undesirable antenna effects such as salt build-up on antenna insulators and ground plane resistance changes and includes the following ‘must-have’ features:- Constant field strength output for higher system availability
- Automatic resistance matching in the Antenna Tuning Unit (ATU)
- Remote control and monitor of the ATU to limit worker exposure to strong RF fields
- Sophisticated graphical user interface (GUI) at Vector Navtex Transmitter for easy maintenance and troubleshooting
- Extensive automatic fault monitoring for faster troubleshooting available locally or remotely
- Extensive remote command and control capabilities for fewer site visits

- Highly Stable Generation of RF and FSK using Direct Digital Synthesizer (DDS)
- Switch Mode Power Supplies (SMPS) eliminate need for user configuration over full ac input range of 170 – 270 V ac
- Vector Enhanced Remote Control/Monitor allows the user access to the vast array of control, status and alarms available from the Vector system including the ability to control/monitor the Antenna Tuning Unit
- Built in Diagnostics allows the user to easily identify fault to Lowest Repairable Unit locally or remotely
- Local or Remote Diagnostic test without need for dummy load
- RS232, RS422, Modem, Optically Isolated Inputs and Form C Contact Outputs available for Remote/Control Monitor
- Commonality of Parts and Assemblies with Vector DGPS and NDB platforms
- A Local PC is not required to install, configure, diagnose or maintain the Vector Navtex system
Navtex High Power 3000w Antenna Tuning Unit
- Dual Channel
- Automatic Servo Controlled Resistive Matching and Reactive Tuning
- Servo Inhibit to prevent tuning from unwanted signals
- Vector 1500TT/3000TT ON/OFF Control available at ATU
- Remote control and monitor of the ATU limits worker exposure to strong RF fields
- An optional external resistor bank for the ATU adds additional resistance in series with the antenna, optimizing the trade-off between antenna bandwidth and efficiency
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